Resumen
This paper proposes a method of establishing the global univalence of a mapping without theassumption of continuity and the absence of points of inflection. When the functions are notcontinuous and the points of inflections are present, the use of a Jacobian to establish univalencepresents some difficulties. The method of establishing univalency, presented in this paper, in turngeneralizes the theorems on the uniqueness of competitive equilibrium and factor priceequalization.